Details ahead. Right to the michigan mom who vanished this weekend. Police believe jessica heeringa was abducted from the gas station where she works. A massive manhunt is under way. Good morning, alex. Reporter: Good morning, robin. Overnight, jessica's family december rattly waited for word from police. But no luck. Authorities say she was suppose to be on her way home when she disappeared. This morning, jessica heeringa's fiance is clinging to hope while trying to keep their 3-year-old son calm. She's a good mother. She needs to come home. She has family who her. Reporter: It's been nearly three full days since she vanished after wrapping up her late-night shift at this gas station. I talked to her an hour before this happened. She was going to be out early and home quick. Reporter: He talked to his fiance by phone between 10:00 and 10:15 friday night. Her last transaction happened at 10:55. Moments later, someone contacted police saying they found the gas station unattended. They found her keys on the counter. No signs of a struggle inside the store. It's apparent that the burglary or robbery was not a cause of the int dent. Reporter: Authorities are searching for a suspicious gray minivan seen behind the gas station shortly before heeringa went missing. Everybody's looking for you. And we're going bring you home. Reporter: Now, the gas station did not have surveillance cameras at the time of her disappearance. Authorities say they have gotten tips from around the country. But family members are hoping someone who saw something will step forward.

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